Island



3 'SheetsSheet 2.

(No Model.)

R. DARLING. MACHINE FOR DUPLIGATING ARTICLES Patented 001;. 22, 1895.

vzperFor 7' 5/6/40 f War/26y 3 Sheets-Sheet 3.

Patented 0013.22, 1895.

(No Model.)

B. R. DARLING. MACHINE FOR DUPLIGATING ARTICLES. No. 548,298.

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UNITED STATES P TENT Grains.

EDMUND R. DARLING, OF WOONSOOKET, RHODE ISLAND.

MACHINE FOR DUPLICATING ARTICLES.

SPECIFICATION forming part of Letters Patent No. 548,298, dated October 22, 1895.

Application filed February 14, 1895. Serial No. 538,342. (No model.)

To all whom it may concern:

Be it known that I, EDMUND R. DARLING, a citizen of the United States, residing at Woonsocket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Machines for Duplicating Articles; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a machine for duplicatin g articles having an irregular surface, and is designed more particularly for duplicating keys, such as the Yale-lock keys.

The invention and its many objects and advantages will appear from the following description and claims, when taken in connection with the annexed drawings, in which Figure 1 is a perspective view of the machine, showing the parts in an operative position. Fig. 2 is a perspective view with a pattern and a blank in position with the carriage let down. Fig. 3 is a plan view with the carriage raised so as to illustrate the parts in an operative position, the operating-handle being partly broken away; and Fig 4 is aseotional view, takeniin the plane indicated by the dotted line at w on Fig. 3, with 'a part of the tool or emery-wheel broken away.

Referring by letter to said drawings, A indicates the bed-plate. This plate, which may be secured to a table or other support by means of bolts or the like taking through apertures a, is provided with two parallel transversely-disposed slots b, starting at a suitable distance from the rear end of said The plate is provided at its forward" plate. end with two horizontally-extending arms 0, which are designed to support ashaft or rodB, and at a point between these arms and the slots 1) is a transversely disposed vertical bearing 0, for a purpose which will presently appear.

D indicates a slide, which is designed to be moved crosswise of the machine and is adjustably secured to the bed-plate by means of bolts 01, taking through vertical apertures e in said slide and through the slots 12 in the bed-plate, nuts or other suitable devices being provided for securing the bolts. This slide D carries upright bearings E, there being one on each side of the slide, and said bearin gs receive and support the tool-shaft F. The tool-shaft is disposed transversely of the machine and carries between the upright bearings a pulley G to receive a drive-belt or the like, and on one end of this shaft is secured the tool, which is here shown as an emery-wheel H, and this wheel may be secured upon said shaft by any suitable fastening devices, such as nuts and washers. The transverse bearing 0, which rises from the main frame or bed-plate in front of the tool-shaft, is provided with a horizontal slot f, and on its front side said bearing is provided with a socket g, which may be composed of two vertical walls It to receive a friction-roller on the operating-lever, as will be presently described.

I indicates a holder for the guidepiece. This holder, as better shown in Fig. 4 of the drawings, is of an angular form, having a depending flange 2', which is designed to extend down the front of the bearing 0, and receives a bolt j, which passes through the slot f, for adjustably securing said holder on the bearing 0. The holder I rests upon the upper straight edge of the bearing 0 and is grooved longitudinally, as shown at lo, to receiveanut lon the threaded stem m of the guide-piece n. The guide-piece should have its outer edge in a plane with the periphery of the emerywheel, and in order that it may be adjustable in its bearings I provide the holder I with a transverse hole 10 to receive the threaded stem m and the outer end of said holder with a recess q to receive the guide-piece and prevent it from turning. On the inner end of the threaded stem is a nut r, and on said stem and within the recessk is a lock-nut I, so that while the guide-piece may be adjusted to and from thelbearing it may be positively prevented from becoming loose after once set in position.

J indicates the stock and pattern carriage. This carriage is designed to slide transversely of the plane of revolution of the emery-wheel, andiis hinged upon the rod or shaft B. This carriage comprises two arms .9 and a plate or bar I? connected thereby, and the whole may be formed integral. The barf is provided in its face with a groove or way u, disposed longitudinally to receive a section K, carrying clamps. The section K has a tongue n to enter the groove u, and a bolt, as shown in dotted lines in Fig. 4 of the drawings and in full lines in Fig. 2, with a nut w or the like is employed for securing the section K upon the part or section 25. The upper section K of this carriage, which section comprises the lower member of the clamps for holding the pattern and also the blank or stock to be operated upon, I provide with two hinged jaws L and M. The jaws are respectively hinged to the outer longitudinal edge of the section K, near opposite ends thereof, and each jaw is provided with a transverse hole P to receive the threaded bolt Q, which takes into a threaded aperture R in the section K. The section K is recessed, as shown at S, to receive and seat the pattern and blank, respectively, and the bolts Q are designed to hold the hinged jaw of the clamp down upon said blank and pattern.

T indicates a handlever. This hand-lever is preferably of an angular form in outline, carrying at its outer end a suitable handle and at its inner end a friction-roller U, designed to enter the socket g on the bearing 0. This lever is pivoted at or about its angle to the under side of the carriage, as shown at V, and is designed to be manipulated so as to raise and lower the carriage on the rod B, and also slide said carriage thereon.

The rod B is held in the arms c of the bedplate by means of plates W and bolts or the like, and the carriage is placed on the rod with one of its arms .9 between the arms 0 of the bed-plate and the other arm 8 outside of the said arms 0, so as to allow a great range of movement.

In operation I place a key Y or other device to be duplicated in one of the clamps L. I then place a blank Z in the other clamp M. Motion being then imparted to the tool or emery-wheel through the medium'of the shaft F and the pulley G,I raisethe carriage up until the blank is brought to engage with the cutting-tool or emery-wheel and the pattern to engage with the guide-piece n. Then as the friction-roller on the hand-lever has taken into the socket g of the bearing 0 by moving said hand-lever in the proper direction the carriage will be moved along on the rod B, and by holding it firmly with the pattern against the guide-piece its movement will conform to the outline or configuration of the pattern, so that the blank, which is also carried by the carriage, will be presented to the emery-wheel or cutting-tool in a similar manner, which will necessarily give the blank the correct shape of the pattern. After the blank has been shaped the operator allows the carriage to swing downwardly upon the rod B, when the complete key or other article may be removed from the clamp and another blank replaced, when the operation can be repeated with ease and rapidity.

I have given a very full and detailed description of the construction of the various parts shown; but I do not wish to be understood as confining myself to such exact construction of parts, as I am aware that many of them will permit of changes and modifications without departing from the spirit of my invention.

Having described my invention, what I claim is- 1. In a duplicating machine, the base plate having the parallel slots crosswise thereof and also having the arms at its forward end, the upright bearing 0, slotted horizontally in combination with the slidable frame carrying upright bearings and adjustable crosswise of the bed plate, the tool shaft journaled in said bearings, the tool on said shaft, the adjustable holder arranged on the bearing frame 0, the guide piece having a threaded stem seated in said holder, the nuts on said threaded stem, and a pattern and stock carriage hinged on a rod bearing in the bed plate and adapted to hold a pattern and a blank, and a lever pivoted in the carriage and adapted to engage the socket of the bearing G, substantially as specified.

2. In a duplicating machine, the combination with the main frame, having the upright bearing 0, the slide carrying the tool shaft and adjustable crosswise of the frame, said upright bearing being slotted horizontally and provided in its face with the vertically-disposed socket g, the carriage hinged to the main frame by the rod B, and provided with two clamps to receive a pattern and a blank, respectively, the angular lever pivoted to the carriage and provided with a handle to manipulate the same, the inner end of said lever being adapted to enter the socket when the carriage has been raised, and the guide piece arranged upon the bearing (1, and adapted to be adjusted both lengthwise and cross-wise of the machine, and to also bear against the pattern, substantially as specified.

3. In a duplicating machine, the combination with a main frame, having the bearing 0, rising therefrom; of the holder I, provided with the groove 70, in its upper edge, theguide piece n, having the threaded stem passing through an aperture in the holder, the nuts on said stem, said holder being adjustably secured to the bearing 0, a tool shaft arranged on one side of the bearing and carrying a grinder, and a carriage hinged to the main frame on the opposite side of the bearing and adapted to carry a pattern and a blank, respectively, substantially as specified.

- In testimony whereof I affix my signature in presence of two witnesses.

EDMUND R. DARLING. Witnesses:

JOHN W. BENNETT, J nrrnnson ALDRICH. 

